Using the template below will greatly help the team reproduce the issue and ease the process of fixing it. Before posting, search for an existing report. If you are not sure it’s a bug, please first report in User Support Hub.
3 tags are required - add them in the tag section next to the title above:
-
One for platform (ms-store, steam, xbox, playstation, or xcloud)
-
One for aircraft if related (start typing in your aircraft name in the tag section and pick correct option)
Feel free to delete this quote section after adding your appropriate tags.
ISSUE DESCRIPTION
Description of the issue:
In SU4, I observe WASM crashes frequently in the inibuilds A320 As well as the A330.
I created a flight plan from KPHX to KSAN and up until I was close to KSAN the flight was going well. But I overshot the airport and while attempting to make a “direct-to” to a previous waypoint and change the FCU speed and altitude, every cockpit display turned orange with a message “WASM module crashed”
I use the following controllers… kid, mouse, velocity 1 yoke, throttle quad and rudder pedals. I also use a MIAP kbd extension, but it is not used in this simulation
FREQUENCY OF ISSUE
How often does this occur for you (Example: Just once, every time on sim load, intermittently)?
This happened during two consecutive flights using same flight plan (A320, the A330)
REPRODUCTION STEPS
Please list clear steps you took in order to help our test team reproduce the same issue:
-
create simbrief OFP from KPHX rwy 7L to KSAN rwy 27 RNAV Z and program into FMC
-
Takeoff and fly past KSAN, then try to program a direct-to waypoint in the FMC.
-
In my simulation the aircraft had a bit of trouble trying to fly it and while messing with the auto pilot FCU to change altitude and speed it eventually gave the WASM crash
[PC ONLY] FAULT BUCKET ID
If you experienced a crash on PC, sharing your Fault Bucket ID would be extremely helpful. You can learn how to find that ID here: How to find your Fault Bucket ID after a crash [PC]
YOUR SETTINGS
If the issue still occurs with no mods and add-ons, please continue to report your issue. If not, please move this post to the User Support Hub.
What peripherals are you using, if relevant:
[PC Only] Are you using Developer Mode or have you made any changes to it?
[PC, MSFS 2020 Only] Are you using DX11 or DX12?
[PC Only] What GPU (Graphics Card) do you use?
[PC Only] What other relevant PC specs can you share?
MEDIA
Please add a screenshot or video of the issue occurring.

